ROBERTSUNRUS wrote:
Hi, I have two polarity testers; One is always plugged into an inlet in our trailer's kitchen and the other one is connected to a 30 amp RV adapter, mounted in a piece of black plastic pipe, (so you can see it better) and used at the power source before connecting my shore power cord.
Bob:
I'm wondering what value there is in leaving a polarity checker always plugged in inside the camper :h ... after all, once the campsite source supply has been verified as being correct it's not suddenly going to change. If you'd want to monitor anything it would be the incoming source voltage which
can change during the course of your stay.